Leptin

Metabolic health, made simple

Only for iPhone

Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.

iPhone

See your body move through real fasting phases, get meal and movement guidance, and ask your AI coach anything. One simple rhythm for lasting metabolic health. Leptin is a metabolic-health lifestyle app: a fasting timer, break-fast and meal guidance, fasting-state-aware movement, an AI coach, and insights into your fasting history and streaks. It is organized around five pillars: Fast, Eat, Move, Coach, and Insights. Leptin is a wellness and lifestyle app. It is not a medical device and does not diagnose, treat, cure, or prevent any disease. Consult a healthcare professional before starting any fasting or nutrition program, especially if you are pregnant, breastfeeding, or have a medical condition or a history of disordered eating. Core fasting tracking, timers, and insights are free. SUBSCRIPTIONS Leptin offers optional auto-renewable subscriptions (subscription group "Leptin Plans") that unlock the AI coach with a monthly credit allowance plus expanded access to guided programs: - Basic: $9.99/month or $99.99/year - Premium: $19.99/month or $199.99/year - Unlimited: $49.99/month or $499.99/year Payment is charged to your Apple ID at confirmation of purchase. Your subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. Your account is charged for renewal within 24 hours prior to the end of the current period. You can manage or turn off auto-renew in your App Store account settings after purchase. Terms of Use (EULA): https://leptin.app/terms Privacy Policy: https://leptin.app/privacy

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The developer, GRAYLIN AI (PTY) LTD, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Linked to You

    The following data may be collected and linked to your identity:

    • Health & Fitness
    • Purchases
    • Contact Info
    • User Content

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Accessibility

The developer has not yet indicated which accessibility features this app supports. Learn More

Information

Seller
  • GRAYLIN AI (PTY) LTD
Size
  • 34.4 MB
Category
  • Health & Fitness
Compatibility
Requires iOS 15.1 or later.
  • iPhone
    Requires iOS 15.1 or later.
  • iPod touch
    Requires iOS 15.1 or later.
  • Mac
    Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
Languages
  • English
Age Rating
9+
In-App Purchases
Yes
  • Unlimited Yearly $499.99
  • Premium Yearly $199.99
  • Basic Yearly $99.99
  • Unlimited Monthly $49.99
  • Premium Monthly $19.99
  • Basic Monthly $9.99
  • $100 AI Credits $129.99
  • $50 AI Credits $64.99
  • $25 AI Credits $32.99
  • $10 AI Credits $12.99
  • Learn More
Copyright
  • © 2026 Graylin AI (Pty) Ltd
  • Developer Website
  • Privacy Policy

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